diff --git a/apps/web/vitest.browser.config.ts b/apps/web/vitest.browser.config.ts
index b152d822104..ca02f2e9f15 100644
--- a/apps/web/vitest.browser.config.ts
+++ b/apps/web/vitest.browser.config.ts
@@ -14,6 +14,11 @@ export default mergeConfig(
         "~": srcPath,
       },
     },
+    server: {
+      // The app dev server uses a fixed port, but browser tests need to allow
+      // concurrent runs to claim the next available port.
+      strictPort: false,
+    },
     test: {
       include: ["src/components/**/*.browser.tsx"],
       browser: {
@@ -21,6 +26,9 @@ export default mergeConfig(
         provider: playwright(),
         instances: [{ browser: "chromium" }],
         headless: true,
+        api: {
+          strictPort: false,
+        },
       },
       testTimeout: 30_000,
       hookTimeout: 30_000,